#define bb_need_name_too_long
#include "messages.c"
-#define RECORD_IO 0
+static const int RECORD_IO = 0;
/* Return codes from gzip */
-#define OK 0
-#define ERROR 1
-#define WARNING 2
+static const int OK = 0;
+static const int ERROR = 1;
+static const int WARNING = 2;
-#define DEFLATED 8
-#define INBUFSIZ 0x2000 /* input buffer size */
-#define INBUF_EXTRA 64 /* required by unlzw() */
-#define OUTBUFSIZ 8192 /* output buffer size */
-#define OUTBUF_EXTRA 2048 /* required by unlzw() */
-#define DIST_BUFSIZE 0x2000 /* buffer for distances, see trees.c */
+static const int DEFLATED = 8;
+static const int INBUFSIZ = 0x2000; /* input buffer size */
+static const int INBUF_EXTRA = 64; /* required by unlzw() */
+static const int OUTBUFSIZ = 8192; /* output buffer size */
+static const int OUTBUF_EXTRA = 2048; /* required by unlzw() */
+static const int DIST_BUFSIZE = 0x2000; /* buffer for distances, see trees.c */
#define GZIP_MAGIC "\037\213" /* Magic header for gzip files, 1F 8B */
/* gzip flag byte */
-#define EXTRA_FIELD 0x04 /* bit 2 set: extra field present */
-#define ORIG_NAME 0x08 /* bit 3 set: original file name present */
-#define COMMENT 0x10 /* bit 4 set: file comment present */
-#define WSIZE 0x8000 /* window size--must be a power of two, and */
+static const int EXTRA_FIELD = 0x04; /* bit 2 set: extra field present */
+static const int ORIG_NAME = 0x08; /* bit 3 set: original file name present */
+static const int COMMENT = 0x10; /* bit 4 set: file comment present */
+static const int WSIZE = 0x8000; /* window size--must be a power of two, and */
/* at least 32K for zip's deflate method */
/* If BMAX needs to be larger than 16, then h and x[] should be ulg. */
-#define BMAX 16 /* maximum bit length of any code (16 for explode) */
-#define N_MAX 288 /* maximum number of codes in any set */
+static const int BMAX = 16; /* maximum bit length of any code (16 for explode) */
+static const int N_MAX = 288; /* maximum number of codes in any set */
/* PKZIP header definitions */
-#define LOCSIG 0x04034b50L /* four-byte lead-in (lsb first) */
-#define LOCCRC 14 /* offset of crc */
-#define LOCLEN 22 /* offset of uncompressed length */
-#define EXTHDR 16 /* size of extended local header, inc sig */
+static const int LOCSIG = 0x04034b50L; /* four-byte lead-in (lsb first) */
+static const int LOCCRC = 14; /* offset of crc */
+static const int LOCLEN = 22; /* offset of uncompressed length */
+static const int EXTHDR = 16; /* size of extended local header, inc sig */
-#define BITS 16
+static const int BITS = 16;
/* Diagnostic functions */
#ifdef DEBUG
# ifdef BUFSIZ
# define MAX_PATH_LEN BUFSIZ
# else
-# define MAX_PATH_LEN 1024
+static const int MAX_PATH_LEN = 1024;
# endif
#endif
/* local variables */
static int test_mode = 0; /* check file integrity option */
static int foreground; /* set if program run in foreground */
-static int method = DEFLATED; /* compression method */
-static int exit_code = OK; /* program exit code */
+static int method; /* compression method */
+static int exit_code; /* program exit code */
static int last_member; /* set for .zip and .Z files */
static int part_nb; /* number of parts in .gz file */
static long ifile_size; /* input file size, -1 for devices (debug only) */
* the compressed data, from offsets inptr to insize-1 included.
* The magic header has already been checked. The output buffer is cleared.
*/
-int unzip(in, out)
+extern int unzip(in, out)
int in, out; /* input and output file descriptors */
{
int ext_header = 0; /* set if extended local header */
bytes_in = bytes_out = 0L;
}
+/* ===========================================================================
+ * Initialize gunzip buffers and signals
+ */
+extern int gunzip_init()
+{
+ foreground = signal(SIGINT, SIG_IGN) != SIG_IGN;
+ if (foreground) {
+ (void) signal(SIGINT, (sig_type) abort_gzip);
+ }
+#ifdef SIGTERM
+ if (signal(SIGTERM, SIG_IGN) != SIG_IGN) {
+ (void) signal(SIGTERM, (sig_type) abort_gzip);
+ }
+#endif
+#ifdef SIGHUP
+ if (signal(SIGHUP, SIG_IGN) != SIG_IGN) {
+ (void) signal(SIGHUP, (sig_type) abort_gzip);
+ }
+#endif
+
+ /* Allocate all global buffers (for DYN_ALLOC option) */
+ inbuf = xmalloc((size_t)((INBUFSIZ+INBUF_EXTRA+1L)*sizeof(uch)));
+ outbuf = xmalloc((size_t)((OUTBUFSIZ+OUTBUF_EXTRA+1L)*sizeof(uch)));
+ d_buf = xmalloc((size_t)((DIST_BUFSIZE+1L)*sizeof(ush)));
+ window = xmalloc((size_t)(((2L*WSIZE)+1L)*sizeof(uch)));
+ tab_prefix0 = xmalloc((size_t)(((1L<<(BITS-1))+1L)*sizeof(ush)));
+ tab_prefix1 = xmalloc((size_t)(((1L<<(BITS-1))+1L)*sizeof(ush)));
+
+ clear_bufs(); /* clear input and output buffers */
+ part_nb = 0;
+ return(EXIT_SUCCESS);
+}
+
+
/* ======================================================================== */
int gunzip_main(int argc, char **argv)
{
- int file_count; /* number of files to precess */
int tostdout = 0;
int fromstdin = 0;
int result;
int force = 0;
struct stat statBuf;
char *delFileName;
- char ifname[MAX_PATH_LEN + 1]; /* input file name */
- char ofname[MAX_PATH_LEN + 1]; /* output file name */
+ RESERVE_BB_BUFFER(ifname, MAX_PATH_LEN+1); /* input file name */
+ RESERVE_BB_BUFFER(ofname, MAX_PATH_LEN+1); /* output file name */
+
+ method = DEFLATED; /* default compression method */
+ exit_code = OK; /* let's go out on a limb and assume everything will run fine (wink wink) */
if (strcmp(applet_name, "zcat") == 0) {
force = 1;
if (isatty(fileno(stdout)) && tostdout==1 && force==0)
error_msg_and_die( "data not written to terminal. Use -f to force it.\n");
-
- foreground = signal(SIGINT, SIG_IGN) != SIG_IGN;
- if (foreground) {
- (void) signal(SIGINT, (sig_type) abort_gzip);
- }
-#ifdef SIGTERM
- if (signal(SIGTERM, SIG_IGN) != SIG_IGN) {
- (void) signal(SIGTERM, (sig_type) abort_gzip);
- }
-#endif
-#ifdef SIGHUP
- if (signal(SIGHUP, SIG_IGN) != SIG_IGN) {
- (void) signal(SIGHUP, (sig_type) abort_gzip);
- }
-#endif
-
- file_count = argc - optind;
-
- /* Allocate all global buffers (for DYN_ALLOC option) */
- inbuf = xmalloc((size_t)((INBUFSIZ+INBUF_EXTRA+1L)*sizeof(uch)));
- outbuf = xmalloc((size_t)((OUTBUFSIZ+OUTBUF_EXTRA+1L)*sizeof(uch)));
- d_buf = xmalloc((size_t)((DIST_BUFSIZE+1L)*sizeof(ush)));
- window = xmalloc((size_t)(((2L*WSIZE)+1L)*sizeof(uch)));
- tab_prefix0 = xmalloc((size_t)(((1L<<(BITS-1))+1L)*sizeof(ush)));
- tab_prefix1 = xmalloc((size_t)(((1L<<(BITS-1))+1L)*sizeof(ush)));
+ gunzip_init();
if (fromstdin == 1) {
strcpy(ofname, "stdin");
strcpy(ofname, "stdout");
outFileNum = fileno(stdout);
- clear_bufs(); /* clear input and output buffers */
- part_nb = 0;
-
/* Actually do the compression/decompression. */
unzip(inFileNum, outFileNum);
/* Set permissions on the file */
fchmod(outFileNum, statBuf.st_mode);
- clear_bufs(); /* clear input and output buffers */
- part_nb = 0;
-
/* Actually do the compression/decompression. */
result = unzip(inFileNum, outFileNum);
projects / oweals / busybox.git / blobdiff